Accel 140032-8 Accel Super Coil Any one use these yet if so what thoughts yay nay? I have an 02 F150 4.6 did plugs pcv air filter fuel filter and it still seems to have a shutter at idle next thought was new coils truck was bought used for work and now has 120000 plus miles, I have put in three months about 8 or 9000.